90000540 F Release date: April 2011

Digi Connect SP® and

Digi Connect® Wi‐SPHardware Reference

90000540_F

Release date: April 2011

© 2011 Digi International Inc. All Rights Reserved.

Digi, Digi International, the Digi logo, a Digi International Company, Digi Connect SP, Digi Connect Wi-SP, Net +, NET + OS, Net+Works are trademarks or registered trademarks of Digi International, Inc. in the United States and other countries worldwide. All other trademarks are the property of their respective owners.

All other trademarks mentioned in this document are the property of their respective owners.Information in this document is subject to change without notice and does not represent a commitment on the part of Digi International.

Digi provides this document “as is,” without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of fitness or merchantability for a particular purpose. Digi may make improvements and/or changes in this manual or in the product(s) and/or the program(s) described in this manual at any time.

This product could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes may be incorporated in new editions of the publication.

About This Guide

Purpose

The purpose of this guide is to assist developers creating custom embedded software for the Digi Connect SP and Digi Connect Wi-SP platform using the NET+OS operating system and tools.

Related Documentation

See the NS7520 Hardware Reference for information on the NS7520 chip.

See the NET+Works BSP Porting Guide for additional programming information.

Support Information

To get help with a question or technical problem or make comments and recommendations about Digi products and documentation, use the following contact information.

General Customer Service and Support

Digi International

11001 Bren Road East

Minnetonka, MN 55343

U.S.A.

United States: 1 877-912-3444

Other Locations: 1 952-912-3444

www.digiembedded.com/supportwww.digiembedded.com

www.digiembedded.com/support

www.digiembedded.com

Contents Purpose ............................................................................................................................. 3

Related Documentation .................................................................................................... 3

Support Information ......................................................................................................... 3

Chapter 1: Introducing the Digi Connect SP & Digi Connect Wi-SP Hardware ........... 6

Hardware Overview ......................................................................................................... 6

LEDs................................................................................................................................. 7

Reset Button ..................................................................................................................... 8

Antenna ............................................................................................................................ 8

MEI 232/422/485 Switch Settings ................................................................................... 9

DB-9 Connector ............................................................................................................. 10

JTAG Interface ............................................................................................................... 11

Power Jack...................................................................................................................... 12

Chapter 2: Programming Considerations......................................................................... 13

GPIO............................................................................................................................... 13

General Information ............................................................................................. 13

GPIO Registers..................................................................................................... 13

GPIO Pin Use ................................................................................................................. 14

LEDs............................................................................................................................... 15

General information ............................................................................................. 15

About LEDs.......................................................................................................... 15

Flash ............................................................................................................................... 15

General Information ............................................................................................. 15

Memory .......................................................................................................................... 16

Reset Button ................................................................................................................... 16

Appendix A: Specifications ................................................................................................... 17

Network Interfaces ......................................................................................................... 17

Serial Interface ............................................................................................................... 18

Data Rates (bps) ............................................................................................................. 18

Flow Control Options..................................................................................................... 18

Environmental ................................................................................................................ 18

4

Power Requirements ...................................................................................................... 18

Mechanical ..................................................................................................................... 19

Antenna Information ...................................................................................................... 20

Antenna Strength ................................................................................................. 20

Antenna Details.................................................................................................... 20

RF Exposure Statement.................................................................................................. 23

Overlay Specifications ................................................................................................... 24

Appendix B: Certifications ................................................................................................... 26

FCC Part 15 Class A ...................................................................................................... 26

Radio Frequency Interference (RFI) (FCC 15.105(a).......................................... 26

Labeling Requirements (FCC 15.19) ................................................................... 26

Modifications (FCC 15.21) .................................................................................. 26

Cables (FCC 15.27) ............................................................................................. 26

Industry Canada ............................................................................................................. 27

International EMC Standards......................................................................................... 27

Appendix C: Change Log ..................................................................................................... 28

Revision E ...................................................................................................................... 28

Revision D...................................................................................................................... 28

Revision C...................................................................................................................... 28

5

Introducing the Digi Connect SP & Digi Connect Wi-SP HardwareC H A P T E R 1

Hardware Overview

The following figure identifies various Digi Connect SP and Digi Connect Wi-SP connectors, LEDs and switches.

Digi Connect SP Hardware Overview

Note: MEI switches and the Reset button are in the same location for both the Digi Connect SP and Digi Connect Wi-SP.

LEDs

Ethernetconnector

Power

DB-9

MEIswitch

Resetbutton

6

Digi Connect Wi-SP Overview

LEDs

Digi Connect SP and Digi Connect Wi-SP have three LEDs. Two LEDs are connected directly to the hardware; the other is software programmable. See the following table for more information.

LED Descriptions

LED Color Purpose

Power Red (labeled PWR)This LED is software programmable. The default is that this LED indicates power (and is therefore always on). See “LEDs” on page 15 for more information

Link Green

Network link status:

– On - unit is associated with an access point

– Blinking slowly - unit is in ad hoc mode

– Blinking quickly - unit is scanning for a network

ACT Yellow

This LED is wired to the Ethernet hardware.

– On indicates bad initialization

– Off indicates ready

– Blinking indicates network activity

7 D i g i C o n n e c t S P H a r d w a r e R e f e r e n c e

Reset Button

The behavior of the reset button is user-defined. See “Reset Button” on page 16 and the NS520 BSP Porting Guide for LED programming information.

Antenna

The Digi Connect Wi-SP is available with 1 RP-SMA connector. The antenna is connected to the product with a reverse polarity SMA connector (sub-miniature size A). The antenna only fits on the product one way to ensure a proper connection. Another option for both signal reception and design flexibility is to use a 30cm antenna extension cord (Digi part number DC-ANT-E-24DP) with .5dB loss to separate the antenna from the product..

Antenna Description

Type Desktop Dipole30 cm

Antenna Extension Cord

Part number DC-ANT-24DT DC-ANT-24DP DC-ANT-E-24DP

Gain 1.8 dBi 2 dBi -.5dB

Caution: This Part 15 radio device operates on a non-interference basis with other devices operating at this frequency when using the antennaelisted in the Antenna Specification table. Any changes or modification to

user’s authority to operate the device.the product not expressly approved by Digi International could void the

8

MEI 232/422/485 Switch Settings

These switches set the MEI (multiple electrical interface) line protocol on the serial interface.

FunctionSwitch Setting

1 2 3 4

EIA-232 Up Down Down Down

EIA-422/485 full-duplex Down Up Down – If up, termination.

– If down, no terminationEIA-485 half-duplex Down Down Up

*If switch 4 is up, termination.If down, no termination.

Up/On

Down/Off

EIA-232 EIA-422/485Full-Duplex

EIA-485Half-Duplex

* *

9 D i g i C o n n e c t S P H a r d w a r e R e f e r e n c e

DB-9 Connector

The figure and table provide information on DB-9 pin orientation and pin assignments.

DB-9 Pin Orientation

DB-9 Pin Assignments

Pin EIA-232EIA-422/485Full-Duplex

EIA-485Half-Duplex

1 DCD CTS- Not used

2 RXD RXD+ RXD+

3 TXD TXD+ TXD+

4 DTR RTS- Not used

5 GND GND GND

6 DSR RXD- RXD-

7 RTS RTS+ Not used

8 CTS CTS+ Not used

9 NA TXD- TXD-

0000

0006

Pin 1 Pin 5

Pin 6 Pin 9

1 0

JTAG Interface

The Digi Connect SP Development Kit is provided with the case opened, providing access to the JTAG interface which mates with a JTAG debugger plug (for example, the Macraigor Raven included in the kit). See the following table for pin assignments on the JTAG adapter block provided.

Digi Connect SP JTAG Debugger Connector

JTAG Debugger Connector Pin Assignments

Pin 1

Pin 2

Pin 3

Pin 4

Pin 5

Pin 6

Pin 7

Pin 8

Pin 9

Pin 10

Pin 11

Pin 12

Pin13

Pin14

VCC+ GND /TRST GND TDI GND TMS GND TCK GND TDO /SRST VCC+ GND

1 1 D i g i C o n n e c t S P H a r d w a r e R e f e r e n c e

Power Jack

The Power Jack is a locking barrel connector that accepts 9 to 30 VDC +/- 5%. The jack is labeled as P11 on the development board. The following table shows the polarity of the power jack.

The following figure schematically represents the polarity of the power jack. Customers wishing to purchase the locking barrel connector for their DC supply, please contact Digi.

Power Jack Polarity, Schematic

Power Jack Polarity

Contact Polarity

Center +9 to +30 VDC

Outer Ground

1 2

Programming ConsiderationsC H A P T E R 2

This chapter discusses programming considerations for the Digi Connect SP and Digi Connect Wi-SP and the NS7520 processor it is based on.

GPIO

General Information

The NS7520 processor supports 16 general purpose I/O (GPIO) pins, some of which are reserved for specific functions and some of which can be customized. These pins fall into three categories:

Those labeled “Reserved” in the following table are dedicated to a specific use and must not be reprogrammed, or the unit may not operate correctly. Often, these pins are not connected to external interfaces.

Those labeled “Allocated” in the following table are exposed to an external interface and allocated to a specific use by the software but can be customized safely with code modifications.

Those labeled “Available” are exposed to an external interface, not controlled directly by the software, and can be customized.

GPIO Registers

Two registers, named PORTA and PORTC, govern the 16 GPIO pins. Each register is responsible for eight pins, and each GPIO pin uses the following four bits to completely describe its behavior:

Mode (CMODE)

Direction (CDIR)

Special function (CSF). This is only applicable to PORTC.

Data value

The first three bits describe the functionality of the GPIO pin. The data bit provides the current value of the pin when read and allows control of the value of an output pin when written.


In order to configure a pin as either a GPIO input or GPIO output, the corresponding bit positions in the appropriate register must be configured according to the information in the following table:

Since each register controls 8 GPIO pins, it is safest to read the full 32 bit register, modify the bits corresponding to the pin, and then write the full 32 bits back. In this way, the behavior of other GPIO pins will be preserved.

For more information regarding the format and programming of the GPIO registers, see the NS7520 Hardware Reference.

GPIO Pin Use

GPIO Configuration

Input Output

– CMODE = 0

– CDIR = 0

– CSF = 0

– CMODE = 0

– CDIR = 1

– CSF = 0

GPIO Pin Use

Register Bit CategoryExternal Interface

Description

PORTA7 - PORTA0

Reserved NA NA

PORTC7 Reserved NA NA

PORTC6 AllocatedConnected to the

red LED

Used as a power indicator (always on). It could be reassigned as a general purpose LED. It must remain a GPIO output for the LED to operate correctly. The LED is lit when the signal is a logic "high."

PORTC5 AvailableConnected to the

reset button.It should be configured as a GPIO input.

PORTC4 - PORTC0

Reserved NA NA

1 4

LEDs

General information

The device server has two types of LEDs:

LEDs connected directly to GPIO pins on the processor and controlled directly in software

LEDs connected to other hardware components (normally the Ethernet hardware) and not directly programmable by the operating system

The development kit supplies software to control the LEDs. This behavior can often be modified by manipulating the LED table in the BSP code. See gpio.c for details.

As with any GPIO output, the GPIO register must be properly configured in order to assert values on the pin. The appropriate bits should be configured as:

CMODE = 0

CDIR = 1

CSF=0

About LEDs

The device server has three LEDs:

The green LED is wired directly to the Ethernet hardware and indicates that a link has been established.

The yellow LED is wired directly to the Ethernet hardware and signals Ethernet activity.

The red LED is software programmable. It is wired to processor GPIO register bit PORTC6. The LED is wired to be active high. The development kit software is implemented by default so that this LED reflects "power" (and is, therefore, always lit).

Flash

General Information

Digi Connect SP and Digi Connect Wi-SP device servers each have 4 MB of flash memory, which is controlled by chip select 0, located at 0x02000000.


Memory

Digi Connect SP and Digi Connect Wi-SP device servers each have 16 MB of SDRAM memory, which is controlled by chip select 1, located at 0x00000000 in the processor address space and aliased at 0x04000000 and 0x08000000. The application program (EOS) is loaded at address 0x08080000.

Reset Button

The device servers have a push button connected to a GPIO pin. This pin is named "/INIT." In the processor, the GPIO register bit associated with "/INIT" is PORTC5. The GPIO pin will read as high normally, and low when the button is pushed. See "Reset Button" on page 8 for the external location.

1 6

SpecificationsA P P E N D I X A

Network Interfaces

Digi Connect SP

RJ-45 connector

10/100Base-T

Half- and full-duplex support

Digi Connect Wi-SP

Standard: IEEE 802.11b

Data Rate: Up to 11 Mbps with automatic fallback

WEP (64-bit and 128-bit encryption)

WPA (Wi-Fi Protected Access)/WPA2/802.11i

Frequency: 2.4 GHz

Modulation: CCK (11/5 Mbps), DQPSK (2 Mbps), DBPSK (1 Mbps)

Transmit power: 16 dBm typical

Receive sensitivity:

– 1Mbps: -92 dBm

– 2Mbps: -89 dBm

– 5.5Mbps: -87 dBm

– 11Mbps: -82 dBm

Antenna connector: RP-SMA

10/100Base-T auto-sensing

Half- and full-duplex support


Serial Interface

One EIA-232/422/485 switch-selectable serial port with full modem control.

Data Rates (bps)

50, 110, 134, 150, 200, 300, 600, 1200, 2400, 3600, 4800, 9600, 19200, 38400, 57600, 115200, 230400

Flow Control Options

RTS/CTS, XON/XOFF, None

Environmental

Power Requirements

Note: The Digi Connect SP and Digi Connect Wi-SP must be powered by a Listed LPS or Class II power supply rated 9-30 VDC, 0.37 A minimum.

Digi Connect SP Digi Connect Wi-SP

Ambient Temperature-40oF to 185oF(-40oC to 85oC)

-4oF to 185oF (-20oC to 85oC)

Storage Temperature -400F to 2570F

(-400C to 1250C)

Humidty 5% to 90%

Altitude 12000 feet

(3657.60 meters)

1 8

Mechanical

Digi Connect SP

Length: 3.876 inches (9.846 cm)

Width: 1.680 inches (4.267 cm)

Height: 0.999 inches (2.537 cm)

Unit Weight: 2.29 oz (64.92 g)

Digi Connect Wi-SP

Length: 3.876 inches ( 9.846 cm)

Width: 1.680 inches (4.267 cm)

Height: 0.999 inches (2.537 cm)

Unit Weight: 1.968 oz ( 55.792 g)

Antenna: .408 oz (11.567 g)

Total Unit with Antenna: 2.376 oz (67.359 g)


Antenna Information

Antenna Strength

The following diagram demonstrates the strength of the signal received by the antenna on both a horizontal and vertical plane. The diagram shows the magnetic field when the antenna is in a vertical position. The red line represents the horizontal plane and the dotted green lined represents the vertical plane. You can see in the illustration that at 90degrees, the signal strength is (as expected) 0.

Radiation Patterns

Antenna Details

AntennaDescription

Dipole Desktop

Part Number DC-ANT-24DP DC-ANT-24DT

Frequency 2.4~2.5 GHz 2.4~2.5 GHz

Power Output 2 W 1 W

DB Gain 2 dBi 1.8 dBi

VSWR < or = 2.0 1.92 max

Dimension 10.0x108.5 mm 105 x4.5 mm

Weight 10.5g 11 g

Connector RP-SMA RP-SMA

2 0

Antenna Restriction in North America

Only antennae of the same type listed on the FCC grant, with equal or lower antenna gain, may be used with the Digi Connect Wi-SP.

Desktop Antenna Dimensions

Units

: mm


Dipole Antenna Dimensions

bOBI

TRO

NSC

ALE

3.0

00UN

ITS:

mm

90.0

(9.1

).3

60

(88.

9)3.

500

(30.

5)1.

200

(25.

4)1.

010

(83.

8)3.

300

(10.

1).3

99

R (3.2

).1

25

2 2

RF Exposure Statement

The Digi Connect Wi-SP device complies with the RF exposure limits for humans as called out in RSS-102. It is exempt from RF evaluation based on its operating frequency of 2400 MHz, and effective radiated power of less than (<) 400 milliwatts. This would be less than the 3 watt requirement for a mobile device (>20 cm separation) operating at 2400 MHz.

In order to comply with FCC RF exposure limits, dipole antenna should be located at a minimum distance of 7.9 inches (20 cm) or more from the body of all persons.


Overlay Specifications

The following specifications are for the product overlays.

Digi Connect Wi-SP

Unit: inches

2 4

Digi Connect SP

Units: inches


CertificationsA P P E N D I X B

These products comply with the following standards.

FCC Part 15 Class A

Radio Frequency Interference (RFI) (FCC 15.105(a)

The Digi Connect SP and Digi Connect Wi-SP have been tested and found to comply with the limits for Class A digital devices pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which the user will be required to correct the interference at his own expense.

Labeling Requirements (FCC 15.19)

This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Modifications (FCC 15.21)

Changes or modifications to this equipment not expressly approved by Digi may void the user's authority to operate this equipment.

Cables (FCC 15.27)

Shielded cables must be used to remain within the Class A limitations.

2 6

Industry Canada

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Le present appareil numerique n'emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la class A prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada.

International EMC Standards

The Digi Connect SP and Digi Connect Wi-SP meet the following standards.

Standards Digi Connect SPDigi Connect

Wi-SP

Emissions

AS/NZS 3548AS/NZS 3548 CISPR 22

FCC Part 15 Subpart C(FCC ID: MCQ-50M1312)

IC RSS 210 (IC:1846A-50M1312)

ICES-003

EN 55022

EN 61000-3-2

EN 61000-3-3

EN 301 489- 3

EN 300 328

VCCI

Immunity EN 55024

Safety

UL 60950-1

CSA 22.2 No. 60950--1

EN 60950


Change LogA P P E N D I X C

The following changes have been made since the last release of this document.

Revision E

Changed barrel connector to locking barrel connector in the “Power Jack” section of Chapter 1.

Added Digi contact information.

Revision D

Updated Antenna drawing

Changed antenna restriction in North America

Added product weight

Revision C

Changed RAM from 8 MB to 16 MB.

Added overlay drawings.

Added desktop antenna information.

Added Japan certification.

.

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Documents

90000540 F Release date: April 2011